Inking mechanism for cylinder printing presses



Feb. 16, 1954 I T 2,669,179

INKING MECHANISM FOR CYLINDER PRINTING PRESSES Filed Feb. 12, 1948 I 8 Sheets-Sheet 1 JOHN HW6PBP7;

Feb. 16, 1954 J. HASPERT INKING MECHANISM FOR CYLINDER PRINTING PRESSES Fil'ed Feb. 12, 1948 I 8 Sheets-Sheet 2 Feb.- 16, 1954 J. HASPERT 2,669,179

' INKING MECHANISM FOR CYLINDER PRINTING PRESSES Filed Feb. 12, 1948 8 Sheets-Sheet 3 Feb. 16, 1954 .1. HASPERT' 2,669,179

INKING MECHANISM FOR CYLINDER PRINTING PRESSES Filed Feb. 12, 1948 8 Sheets-Sheet 4 J. HASPERT Feb. 16, 1954 INKING MECHANISM FOR CYLINDER PRINTING PRESSEIS 8 Sheeis-Sheet 5 Filed Feb. 12. 1948 Feb. 16, 1954 J. HASPERT 2,669,179

INKING MECHANISM FOR CYLINDER PRINTING PRESSES Filed Feb. 12, 1948 8 Sheets-Sheet 6 awe/rm Feb. 16, 1954 J. HASPERT 2,669,179

INKING MECHANISM FOR CYLINDER PRINTING PRESSES Filed Feb. 12, 1948 s Sheets-Sheet 7 Ja/m His/ 577;

Feb. 16, 1954 J. HASPERT INKING MECHANISM FOR CYLINDER PRINTING PRESSES Filed Feb. 12, 1948 \izy 8 Sheets-Sheet 8 Jay/v wis s/P Patented Feb. 16, 1954 MEGHZA-NISMFQR EYIEI'NDEB 11 PRINETNG PRESSES John llasue am a. F a

-' 'Application Febmairy 12, 154.8, Sg1ii1 khlpn7fl88 -:-J Qlaim l- Jil -1 .52

and quickly be removedfirom the press for. cleanv ing andreplacement.

A furtherobject 0f :the invention is -=.to -;provide an improved sinking tmechan'ism unit :having an ink reservoir and fountain roll, and a plurality of-transier and form .rolls so irelated that a con tinuous supply of ink is -=ma=intained #from time reservoir t0: the form-rolls.

A further obj ectof the -invention is --to provide a -roll type inking mechanism :unit havinglafountain --roll and doctor blade with improved-means for adjusting and regulating the inktaken up by the fountain roll.

A- further -obj ect of :=-theinv-ention-= is to provide a--roll =typeinking =mechanism unit havingim proved -'-means for adjusting =the pressure or squeeze *between adjacent contacting rolls, and thus megu-lateuthetransfer :of ink fito the form rolls.

'fl' further-object of the invention; is {to :provide ail-improved r011 type inking mechanism unit having provision for readily removing ai -plurality ofthe-rolls' as a group for cleaning.

-Aafurther; object of the invention is the provision ofan improved roll -typeinking mecha' nism --unit having --a plurality of wider tolls-movably supported on -a-frame so as to permit ready removal thereof from-theform' rolls.

Afurtherobject of the inventionds to iprovide an improved roll type inking -mechanism--unit having 'provisionior readily releasing the-pressure "between -the--rol1s-when-the uni't -is;out of use "without--the-neoessity of wholly removing the rolls-from theunit. 1

Other aims and objects of the invention will be apparent to --p ersons -skilled the -art by--ref erence to the accompanyin drawings and annexed detailed description illustrating and de'-" scribing one preferred embodiment of the :invention- Fig. 1 is a diagrammatic side elevation of'a kmgwcontact "or engagement iwith ,2 I portion of a multiple cyl-inder. printing pressisulte able for multicolor :printingand. illustrating a plurality of inking unitsithenef or;

Fig. 2-;isla-ske1et0niend elevationeof the inking mechanismand supporting .iplatform and .117 mechanismfor raising-and flowering it as viewed from flzhe rig ht hancla end 20f .Fig. 1, Jtheflef'j hand linkage .iof E-ig. vilisbeing shown to; position he inking plattorm in laweredipositionjand ii liilii ht hand 1=inkage -=toelevatmtheplattorm Fig. 3 'is: aeplan-Jviewtof thevinkin neohan m uni-tembodying the present invention;

'F-igwA ris ian end. elevationlas zyiewed ,firom 5th? righthand -end-shown in Fig. 3

Fig'. 5:isianlendJelevationloi thejinking :mechanism unit'as viewedl-ztmm :the left; or drive end thereof as viewed-immfiisfi .Eig. is is la frontielevation of :the .inkinglmechanism unitshownein Fig.

Fig. 7 is a vertical sectional view-wthroughtbhe roll adjusting mechanism as itaken .on the :line '-31'-Of-Ei g.i4;

Fig: #8 is:awertical sectional view -.through;. t he doctor bl-ade 8Jdju-Sting-- mechanism as -.taken on the linev8--8 of Fig; A

Fig. 9 is .1a horizontalwectional.lview through the doctor -blade a cljustingmechanism :as taken on the l-ine 9- 9- of Fig.i4;

;-f-Fig. 10 :aztlZiIlSVGlSB :sectional :view :through the vibrator roll actuating .'.mechanism asi taken oaths li-ne l O- tfl of l igu;

' -=-F-ig. l lis .a transversesectional view vas taken onthe'line l =l-*l l ot-Fig; 6;

Fig. 12 is a transverse sectional view through the inking mechanismets taken on-1the .line I i-=4 2 oieFigpijgand Fig. 13 is ai -transverse sectional view through the carriage fcr thetransfer roll, avibrator roll and iorm' roll as taken on :the .line .13.- --l3 inf Fig.6.

=3Referring etc the drawings, the --inking .meohr anism-qf the presentslinvention is particularly adaptable 0r-use in a multiple: cylinder printing presshaving a plurality of laterally -spaced horizentally gdisposed "printing cylinders' al, suitably supported-on -a supporting arm mounted onoa base i such for example as disclosed in-lmy prior cp-pending application Serial No.s646;402; 4i1ed February *8, *1j946 ,--=now U :lE a-tent- Noa -2,(i06;493.

The printing-mechanismadvantageously-loomprises-a platforml l 0:. movably supportedton guide posts -l l-- extending above theebase v3 so ;as .itocbe vertically mevab1ebeneath;::the printing icylinr ders Suit'alqlemeans for raising-and lowering the platform-may comprise pairs of-r toggle links 12 at opposite ends of the platform, each toggle having an end pivotally connected to a fixed part, as at I 2*, to an upstanding bracket l3 on the platform and to a nut I4. The nuts M are oppositely threaded on a shaft !5 journalled in bearings I6 on the base 3 and adapted to be rotated by miter gearing I! on an actuating shaft 18 extending lengthwise of the base 3 below the platform it). The threaded portions of the shaft i5 are oppositely threaded so that the respective nuts M are simultaneously moved toward and away from the center position as will be apparent. Actuation of the shaft l8 rotates the shaft l5 by means of the miter gearing to move the nuts I i on the shaft transversely in opposite directions toward and from the center. As the nuts move away from the center position, the

links I2 are moved to a more perpendicular po sition, thus raising the platform It! toward the printing cylinders I, as shown in the right hand side of Fig. 2, and as the nuts M are moved inwardly, the platform is lowered toward the base as shown in the left hand side of Fig. 2.

The platform [5 is provided with a plurality of inking mechanism unit supports, one for each of the printing cylinders, and advantageously these supports comprise a machined surface 29 to which is secured a machined guide block 2i having a dovetailed groove 22 therein and which block may be secured to the machined surface of the platform by hold-down screws or the like (not shown). As will be apparent, the blocks 23 may be assembled on the machined surface 26 with shims or other devices to insure accurate leveling of the blocks in a horizontal plane, and thus permit the upper surface of the form rolls of the inking mechanisms to be disposed in a common horizontal plane so that the form rolls will contact the printing cylinders under like pressure. 7

The inking mechanism unit of the present invention comprises a housing 25 for holding a supply of ink as well as housing a plurality of rolls, including a form roll, for transferring the ink to the printing cylinder. The base of the housing is formed with a depending dovetailed rib or key 26 accurately machined to fit in the dovetailed groove 22 of the blocks 2| so as to accurately be positioned on the platform. The keys 26 slidably fit in the dovetailed grooves 22 of the blocks 2|, permitting the whole inking mechanism to be removed laterally as a unit from the platform 10 of the machine for replacement or cleaning.

The housing 25 is provided with a longitudinally disposed partition 21 which may terminate short of the bottom of the reservoir (see Fig. 12) to permit the flow of ink from a reservoir section 28 to a roll housing section 29 in which is positioned a fountain roll and doctor blade, transfer rolls, vibrator rolls and a form roll for transferring and uniformly spreading the ink from the reservoir to the form roll as is well understood in the art.

The fountain roll 30 is fixedly mounted in the lower portion of the housing section 29, being secured to a shaft 3| extending through the ends of the housing (see Fig. 10) and preferably consists of a smooth surfaced metal roll of a length corresponding substantially to the length of the form roll which contacts the printing cylinder. Desirably, the fountain roll 30 may be a copper or brass roll having a cadmium or chromium plated surface to provide a smooth surfaced finish. A doctor blade 32 (see Figs. 9, 10 and 12) may be mounted upon a rod 33 journalled in bearings 3A in the ends of the housing 25 and having a longitudinal groove 35 for receiving a looped portion of the doctor blade which may be retained in the groove by a retaining key or rod 35. The blade 32 has an outwardly turned end portion 32 and is preferably formed of or fitted with a bearing surface of softer material than the fountain roll with which it engages.

The doctor blade rod 33 may be suitably actuated to bring the end 32*- of the blade toward and from the surface of the fountain roll 30 to vary the amount of ink picked up by the fountain roll 35. One suitable mechanism for actuating the doctor blade may comprise mechanism for oscillating or rocking the rod 33. This advantageously may be accomplished by means of a of the housing 25 and adapted to be moved by push rods 38 and 39, each engaging the head 3'? above and below the center of the rod 33, respectively. The push rods 38 and 39 may be slidably mounted in a bracket 40 and each is provided with a worm gear H in mesh with a worm G2 on a shaft 43 having an adjusting knob 44. Rotation of the knob in one direction will transmit motion simultaneously to the push rods 38, 39 to move them in opposite directions so that the doctor rod 33 may be rocked optionally in either direction to move the doctor blade 32 toward or away from the fountain roll 30.

The outer terminal edge of the doctor blade 32 is preferably divided into sections as by V- shaped notches 35 at spaced intervals throughout its length (see Fig. 10), and each of these sections is engaged by the end of an adjusting screw threadedly mounted in a part of the housing 25, as for example, of the partition 21. By means of the adjusting screws 45 the selective portions of the doctor blade may be adjusted to bear more tightly or loosely against the fountain roll to compensate for irregularities in the roll to provide a uniform spread of ink thereon or to cut down or close off sections of the roll almost completely as may be desired.

Mounted in the roll portion 29 of the housing 25 and above the fountain roll 30 are a rubber covered transfer roll 50, a pair of metal surfaced vibrator rolls 5|, 52 and a rubber form roll 53 for transferring ink from the surface of the fountain roll to the printing cylinder of the printing press. One of these rolls, for example, the vibrator roll 52, may be rotated in fixed bearings in the ends of the housing 25, and the other rolls, namely the transfer roll 50, the vibrator 5i, and the form roll 53, are preferably mounted in a carriage movable as a unit relative to the housing 25. For this purpose the rolls 50, 5! and 53 may be journaled in end brackets 54 at opposite ends of the housing (see Figs. 3, 4., 5, 6 and 13) each having a laterally extending guide pin 55 adapted to be slidably fitted in the bearings 56 on the end frames of the housing 25. By sliding the pin 55 from the bearings 56 of the housing end plates, the brackets 56 and connecting rolls 56, 5| and 53 may be moved laterally as a unit from the housing, vibrator roll 52 and fountain roll 30.

Means in the form of an adjusting mechanism are provided for adjusting the position of the bracket 54 and assembled rolls 5d, 5| and 53, relative to the housing 25, fountain roll 30 and vibrator roll 52 so as to effect the desired pressure or squeeze between the several contacting rolls and thus regulate to a desired degree the ahlekriess ot tl ie inkn1 trans'ferred' to" :the'iorm rom .53. the illustrated embodiment of "the inventioh the above adjusting means ama-yxaw rants-gender :eemprise a shaft fi'fl m'eunted in the end walls of the housing and preferably above tne reservoir eempartment; and provided-adjai t's bizipesite ehds ivith suitable gearing .61

' tion to a shaft'. 62 at e The gearing 6! herein illustrated g spirar gear" which are suitable for deseribe'd'. i-he shaft 62 =has .a fl ii eaded c section vvith tlie roll bracket. M a-rid preferabr is effected bythreadingthe-end erase shaft te -engage in a threaded bore 54' in the iewenpertibn bf th'e hr-a'oket 514. -Thus the sheet et rnityereaved, as by means otthaknob e5; snare fiu' and gears t l to rotate the threaded lifedf in th b'oi 54 f the bracket-thereby enee g an adjustment the bracket and rolls ane 53' carried; thereby laterally with refere'nee te Ith'e' fi-ie'dly -meuntearolls 313 and 52.

The vibrator roll 5| is mounted on a' shaft EB QFig; 1'3 jourhalled' in-releasableibearings befor 'ward end er the brackets 54 and a ivet'ed as at 68 to the brackets 55 and ilo many-hem osed p'ositidn by a clamping plate 69 and serew l0 When-- the clamping iii-ate 69* ti ghfehd'fiio :liold'the -6 in-closed brater rolisnaft is properly posiage 'td insure, propercontact seeween ahevibrater ren 51 and the transferia'nd teem em-1s Maud ss resp'eetively. Loosening the late 6 permnsane link- El to fall "a age re permit the roll 51 'to bemesiuuneuout of" ebti-tact vvith the rolls 5e Thefabove described 'inountings for the transffiroll 0 the vibration roll er and the form r611 53 *are' ef' p'artieular advantage in- 'connection with relatively sinaill mulfiiuolorpresses of the p'e ii-l'slt i'sd in '--'ctiprldiiig application S'eri'al N0.- 6463402, fil'ed February 1946,- "now fl. 'si Patent Ne). 2;606,493} aforesaid: When the press -=iis '-id le fr siibst'afiti 61" exam-pie ove lit', th

e 53* Gin-G tfi'e lblls' 5 0; 51- and 53' dafir-id-th6reby W fIO'I'Il the fixedly mdiint'e'd '10115" 30 and 52". 'This voids damage to the riibher eovered rains 50' and 53 Whih rapidIy deform 'ifmaintaihe'd'under"pressure 'whenhot in use. As will be apparent; the vibrator roll "5' I may be released fi'bfh ZirESSllfGCUHtai-it with the rubber Covered rolls 50 and-53 by releasing theclamp'in'g s'crew I0"'ai1d3 p1ae '69; permit-ting" separ'ation of the linker iremfthe bracket 54.

The {vibrator rolls =5]; -52 "are "preferably reipr'oeatedlongitudinally "so as to spread ink properly over the form roll 53. Suitable 'm'eans forreciprocating the rolls 5!, 52 'isprovlded; and preferably is supported-"wholly by the housing 25 so as to be movable with the rolls *and housing'asa li'ni't. 1'1 1 dill-e illii'strarted' embbdiinnt (-See Figs. 3, 6 and -'1 the actuatin'g r'rieans for the vibratin --ol'ls comprises ai pl'atemember lilwse'eured to -the" forward "wall or the housing and having zjournalled-therein "a shaft "72- oarry'ing 1a -wor-1'n 13"meshing- *with a wormgear 14 conneeted tO- aWei-a'nK "i-Bfithepin 1 8 :of which works in a slottediportion l ota-lever :78 pivoted as'at 1 te the-"plate T l n The ieve'r 151 has a r-pivoted extension 80 having an end portiorr working ting in gro'ove'dends ill and" 52 of: the rolls -5l and 52 whereby iongituuinal movement. arena rolls "is" effected, whil'e' perrnitting rtatidn there-- of relative to thei lever 8 2; The worm gear '1-4' and theorank i5? are-rotated 'by ine'ans of -the worm 1 3 -on the shaft '12 the latter in turn being Agearing eonneetions as in mesh': with arpiniori 8-? 6n the" iountain roll shafta Thus the erank 15 of '--thevibrating mechanism is driven- 'from shaft 12 not synchronously with'ithe fou ritaii'i roll '30 td os'dillate -'the=-1'ever:estension 8's th-e slotted-pardon of the actuating lever. The actuating lever 32 e'se'i-llates in'turn abbut its pivo't hein'gpivo'ted to" the vibrating rolls fi land- 52 toreoipre'eat'e' them in opposite direotions. I r

The inkthus trainsferred to the form' 'rdll 53 is properly conditio'ned 'f or transfer to the printing image of the printing cylinder by means ol rider rolls which preferably are of relatively softrnaterial; for example rubber. These rolls 9!) are preferably idle rolls driven by 'frictionail contaet with 'the form rel-land 'are journalled attheir. opposite ends to the bracket members B'Fpivoted at one end to the housing 2E5; 10re'ferably at the upper end or the reservoir porticin 252 W'hen the unit is in operation, the rbl l's are incontact with the form roll as shown in Fig. 12. *When the'unit -is not in position inthe-pressithe rider rolls 90 may be released irom pressure en'gage ment with-the form rolls as shown fulldines away from the form roll, as indicated in'--dotte'd lines, so as to relieve the soft surface-=thereo'f from pressure which is' liable to result in-distortion of the true cylindrioal form of theroll.

The rolls" 30, 50. 51; 52- and 53 are advanta geou'sly positively'dri-ven by means of 'intermes'hrespective roll-shafts; as illustrated in Fig. '6; and mayreceivepower b'y'means of .a gear oil-the form roll-shaft whichds-a'dapted to mesh-with the driving pinion 96"coupled-with the printing cylinin the-machine.

jl hesu'pplyof froin the reservoir compartment- 28 of the housing 25 of 'the-fountain-" roll' 30'will vary somewhat "depending upon the'viscosity of the ink and the speed'at which the press is operated. Where inks of relatively highviscosity are used at relatively :high production speeds'ofthepress, 'it may be -d'esirable toassist the'fiow ofink from the reservoir to a point-adjacent the fountain roll by means of an impeller oragitator devi'ce. One suitable form of agitator mechanism for-this purpose comp-rises an agitator bar 91 'disposed longitu'dinally of -the' reservoir 28 adjacent. the bottom thereof andadapted to be oscillated towards and from a com'municating passage between the -reservoir and roll housing section 29, preferably below the partitionZl; De-

1 sirably,-the agitator-may have an upstanding arm 98 providedwithabushing 99 journalled onthe shaft 60 and provided with a pivoted link we adapted to extend outwardly over the end of the housing 25 to receive a slotted-end of a crank arm llH driven from one of the roll driving gears, for-example thedriving gear 30' for theform ro1130. I

Thelink 100 of the agitator is advantageously pivoted to the bushing 99-so as to be swung in- I wardly and downwardly back to the :partition 21 4 to permit the rider rolls being moved into and out of position with respect to the form roll as shown in Figs. 4 and 5.

From the above description it will be apparent that I have provided a simple improved compact inking unit for printing presses particularly of the roll type, in which the unit may be inserted in and removed from the press by slidably engaging or disengaging the rib 26 in the groove 22 of the platform. When the invention is embodied in a multi-color press, and the several inking mechanisms are positioned on the platform l0, they may be simultaneously raised and lowered into and out of engagement with their respective printing members i simply by rotating the shaft 18 in the proper direction.

A machine such as is illustrated diagrammatically in Fig. 1 may advantageously be used for the printing of small articles in multi-colors, for example, labels, wrappers and the like job work; With such work the press may be idle for substantial periods of time, in which case it is desirable to remove the printing mechanism for cleaning and storage. As will be apparent, each printing unit is readily removable laterally from the platform I by simply sliding the housing from the grooved block 2!.

In storing the inking mechanism when not in use, it is desirable that the rubber covered rolls be out of pressure engagement with other rolis,

to avoid damage to the pliable surface. With the present unit this may be accomplished by raising the bracket 9! to release the rider rolls from en gagement with the form roll 53. The carriage 54, carrying the form roll 53, vibrator roll and transfer roll 59 may be then moved transversely of the housing by rotation of the knob 65 to sepa rate these rolls from the fountain roll 3% and vibrator roll 52. The vibrator roll 55 may be moved away from the form roll 53 and transfer roll 50 by releasing the screw and clamp til, permitting the link 51 carrying the vibrator roll shaft 66 to fall away from the carriage 54. Furthermore, the adjusting mechanism for the carriage permits the operator to obtain the desired squeeze between the rolls when setting up the press for use.

Although I have illustrated and described a preferred embodiment of the invention, I do not intend to be restricted thereto as the invention includes equivalent means as may be within the scope of the appended claims.

I claim:

1. In a printing press in combination with a printing roll, an inking mechanism platform provided with a horizontally disposed guideway below and parallel to said roll, an inking mechanism unit comprising a housing providing an ink reservoir and transfer roll mounting, said housing having a guide fitting said guideway whereby said unit may be removed laterally from said platform and means for moving said platform vertically to carry said inking mechanism into and out of inking position.

2. An inking mechanism unit for roll type printing presses comprising a housing providing a roll compartment and an ink reservoir in communication therewith, a fountain roll rotatably mounted in said housing and extending into said roll compartment, a doctor blade bearing on the surface or said fountain roll, the outer terminal edge of said doctor blade being divided into a plurality of sections by notches, the inner edge of said doctor blade being looped, a rod provided with a longitudinal groove for receiving the looped inner edge of said doctor blade, means securing said doctor blade in the groove of said rod, and means mounted on said housing for rocking said rod to vary the pressure of said blade against said roll.

3. An inking mechanism for roll type printing presses comprising a housing provided with an ink reservoir, a plurality of rolls rotatably mounted in said housing on spaced apart fixed axes, a roll carriage reciprocably mounted on said housing and movable relative thereto in a direction normal to the axes of said spaced rolls, a plurality of rolls including transfer and form rolls mounted in said carriage and adapted for coaction with said first named rolls, means mounted on said carriage for moving at least one of the second named rolls axially and parallel to said first named rolls and manually controlled means for moving said carriage optionally to maintain said second named rolls in adjustable pressure engagement with said first named rolls or to move said second named rolls away from the first named rolls.

4. An inking mechanism for roll type printing presses comprising a housing provided with an ink reservoir, a plurality of rolls rotatably mounted in said housing on spaced apart axes, a roll carriage reciprocably mounted on said housing and movable relative thereto in a direction normal to the axes of said spaced rolls. a plurality of rolls mounted in said carriage and adapted for coaction with said first named rolls, manually controlled means for adjustably positioning said roll carriage to move the rolls carried thereby toward and away from said first mentioned rolls, a vibrator roll mounted in said carriage for coacting engagement with the other rolls carried thereby, means for vibrating the vibrator roll axially and parallel to the other of said rolls and means for releasing the vibrator roll from pressure contact with the coa-cting rolls.

5. An inking mechanism for roll type printing presses comprising a housing provided with an ink reservoir, a plurality of rolls rotatably mounted in said housing on spaced apart axes, a roll carriage reeiprocably mounted on said housing and movable relative thereto in a direction normal to the axes of said spaced rolls, a plurality of rolls mounted in said carriage and adapted for coaction with said first named rolls, manually controlled means for adjustably positioning said roll carriage to move the rolls carried thereby toward and away from said first mentioned rolls, a vibrator roll mounted in said carriage, means for continuously moving the vibrator roll axially and parallel to the other of said rolls, a pair of pivotal links mounted on said carriage for holding said vibrator roll in coacting engagement with said other rolls carried thereby, and adjusting means for moving said links relative to said carriage.

6. An inking mechanism for roll type printing presses comprising a housing, a plurality of rolls mounted in saidhousing including a fountain roll, transfer, vibrator and form rolls, means 'mounted on said housing and driven from one j said form roll.

7. An inking mechanism for printing presses comprising a housing providing an ink reservoir and a communicating roll compartment into which ink from said reservoir is adapted to flow, a plurality of ink transfer rolls rotatably mounted in said housing and including a fountain roll having the surface thereof movable in the ink in said roll compartment, and movable impeller means mounted in said reservoir for accelerating the flow of ink from said reservoir to said roll compartment.

8. An inking mechanism for printing presses comprising a, housing providing an ink reservoir and a communicating roll compartment into which ink from said reservoir i adapted to flow,

va plurality of ink transfer rolls rotatably mounted in said housing and including a fountain r011 having the surface thereof movable in the ink in said roll compartment, an impellermounted in said reservoir for accelerating the flow of ink therefrom to said roll compartment, and operative connections between one of said rolls and said impeller.

9. A printing press comprising a frame, a plurality of printing roll mounted on said frame,

an elongated platform disposed below said rolls for moving said platform vertically to simultaneously adjust each of said inking mechanisms into and from cooperatiive inking position with said printing rolls.

JOHN HASPERT.

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